indexo.dev

subtraction.com

.com crawl

First seen 2026-04-12 · Last seen 2026-05-09 · ok HTTP/1.1 200 1545 ms crawled 2026-05-01

US · 141.193.213.11 · AS209242 Cloudflare London, LLC

Reputation 100/100

Classifying

HTML metadata

Title
Subtraction.com + Khoi Vinh’s Web site
Description
Khoi Vinh’s Web site
Language
en-US
Feeds

Open Graph

url
https://www.subtraction.com/
title
Subtraction.com
locale
en_US
site name
Subtraction.com
description
Khoi Vinh’s Web site

Technology

CDN
Cloudflare
CMS
WordPress
Fonts
  • Google Fonts

Third-party hosts loaded (4)

  • fonts.googleapis.com×1
  • gmpg.org×1
  • stats.wp.com×1
  • wp.me×1

Social

Contact

Address
Post Office Box 131,New York, NY 10276-0131

Registration

Registrar
NameCheap, Inc.
Created
1997-02-13
Expires
2028-02-14 636 days left
Updated
2023-01-17
Name servers
  • dns1.registrar-servers.com
  • dns2.registrar-servers.com

DNS records live

NS
  • dns1.registrar-servers.com
  • dns2.registrar-servers.com
MX
  • 1 aspmx.l.google.com
  • 10 aspmx2.googlemail.com
  • 10 aspmx3.googlemail.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
  • v=spf1 ip4:66.220.23.224/27 ip4:66.160.135.0/24 ip4:64.62.135.0/24 ip4:216.243.170.0/24 ip4:216.243.150.0/24 ip4:216.250.166.0/24 mx ?all

Certificate (current)

E8
from 2026-03-07 to 2026-06-05
Expires in 17 days

Full certificate history on crt.sh ↗

Links to (13)

Linked from (5)